Though I claim to be a photographer I don’t own a printer. I can’t stand dealing with ink cartridges or printer profiles. Instead, I rely on Costco Photo for most, if not all, of my photo printing needs.
Costco is the cheapest place I have found that prints on high quality Fuji archival photo paper in sizes up to 20″ x 30″. At $9.99 for a 20″x30″ print, it’s 1/3rd the cost of the previously reviewed Pictopia (though, admittedly, they lack the same range in sizes). You do not need a membership to use the Costco Photo Center service on-line but it necessitates that the prints are shipped to you. Larger prints are shipped rolled in a tube. If you are a Costco member you are allowed to use custom color profiles while also adding the option of picking up your order at the nearest Costco which can cut down on turn-around time.
I have heard on forums that Costco Photo Centers vary significantly in quality, and that some labs are run incredibly well and are capable of producing results equivalent to far more expensive services, while others have wonky colors with less than dedicated staff. In my experience, if I ever have a problem with a photo, no matter how minor, they are very, very quick to reprint while also letting me keep both (which is a nice bonus).